Optical Brightener ER-1

C.I.199 CAS：13001-39-3

CHEMICAL NAME: 1,4-Bis(2-cyano styryl)benzene

MOLECULAR FORMULA: C₂₄H₁₆N₂

MOLECULAR WEIGHT: 332.2 (As International relative Atom Mass 1997)

SPECIFICATIONS:

Item	Indices
Appearance	Greenish yellow powder
Purity	≥ 99.0 %
Melting point	230-232℃
Grain finess (> 4μm grain)	≤ 3

APPLICATIONS:

Optical Brightener ER-1 is very applicable to whitening and brightening of terylene (polyester) fiber and has good whitening effect for polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), engineering plastic ABS and other plastics. Adding Optical Brightener ER-1 during setting processing of polyester chip and recovery of polyester chip can obviously enhance product grade. It is widely applied in coating industry as well.

Optical Brightener ER-1 is stilbene-like compound and not soluble in water, appearing nonionic. Adding it into various additives to Formulate 20% lactescence, which is used for whitening of polyester fiber in printing and dyeing industry and in possession of extremely high fluorescence intensity and whiteness, color fastness to sunlight of 4-5 grade and color fastness to washing of 4-5 grade. It especially used in high temperature fixing absorption poly easter whitening.

Directions for usage and dosage: (such as fixing absorption whitening)

PROCESS:

1. When whitening agent is directly used for chemical fiber plastics, firstly mix uniformly ER fine powder and additives such as titanium white and toner as certain proportion, then carry out washing and baking for polyester chip or plastic chip, and then put them into melting machine, add mixed whitening agent into polyester chip as the proportion of 0.02-0.08% (to polyester weight), mix them uniformly at 80-120℃, finally carry out temperature rise to 240-280℃ for fusion and laddering.

2. Formulating 20% lactescence by adopting Optical Brightener ER-1, and it is used for whitening and brightening of polyester fiber or blend fabric in terms of printing and dyeing. Dosage for pad dyeing: 1.5-3g/L (the maximum ≤5g/L); dosage for exhaust dyeing: 0.2-0.8% (o.w.f) (the maximum ≤0.8% (o.w.f)). Temperature: 180-200℃, curing for 30-40s.

PACKAGE: Packaged in plastic drum. Net weight is 25 kg or 50 kg each.

STORAGE: Should be stored in cool and dry place. It shall be stored in shady and dry warehouse with storage period more than or equal to 2 years.

SHANGHAI JECA COLOR CO.,LTD.

ER-1